com.twinsoft.convertigo.eclipse.dialogs.MultipleDeletionDialog.java Source code

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Here is the source code for com.twinsoft.convertigo.eclipse.dialogs.MultipleDeletionDialog.java

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/*
 * Copyright (c) 2001-2011 Convertigo SA.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see<http://www.gnu.org/licenses/>.
 *
 * $URL$
 * $Author$
 * $Revision$
 * $Date$
 */

package com.twinsoft.convertigo.eclipse.dialogs;

import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.swt.widgets.Shell;

public class MultipleDeletionDialog {

    private static final int ALWAYS_ASK = 0;
    private static final int YES_TO_ALL = 1;
    private static final int NO_TO_ALL = 2;
    private String[] buttons;
    private int confirmation = ALWAYS_ASK;
    private String title;
    private boolean hasMultiple;
    private Shell shell;

    public MultipleDeletionDialog(Shell shell, String title, boolean hasMultiple) {
        this.title = title;
        this.shell = shell;
        this.hasMultiple = hasMultiple;
        if (hasMultiple) {
            buttons = new String[] { IDialogConstants.YES_LABEL, IDialogConstants.YES_TO_ALL_LABEL,
                    IDialogConstants.NO_LABEL, IDialogConstants.CANCEL_LABEL };
        } else {
            buttons = new String[] { IDialogConstants.YES_LABEL, IDialogConstants.NO_LABEL,
                    IDialogConstants.CANCEL_LABEL };
        }
    }

    public boolean shouldBeDeleted(String message) {
        if (confirmation == YES_TO_ALL) {
            return true;
        } else {
            switch (confirmation) {
            case ALWAYS_ASK: {
                if (confirmOverwrite(message)) {
                    return true;
                }
                break;
            }
            case YES_TO_ALL: {
                return true;
            }
            case NO_TO_ALL: {
                break;
            }
            }
            return false;
        }
    }

    private boolean confirmOverwrite(String msg) {
        if (shell == null)
            return false;
        final MessageDialog dialog = new MessageDialog(shell, title, null, msg, MessageDialog.QUESTION, buttons, 0);

        shell.getDisplay().syncExec(new Runnable() {
            public void run() {
                dialog.open();
            }
        });
        if (hasMultiple) {
            switch (dialog.getReturnCode()) {
            case 0:
                return true;
            case 1:
                confirmation = YES_TO_ALL;
                return true;
            case 2:
                return false;
            case 3:
                confirmation = NO_TO_ALL;
            default:
                return false;
            }
        } else {
            switch (dialog.getReturnCode()) {
            case 0:
                return true;
            case 1:
                return false;
            case 2:
            default:
                return false;
            }
        }
    }

    public void setTitle(String title) {
        this.title = title;
    }
}